Chances are when you were in the mood for watching classic William Shatner on “Star Trek,” you were limited to watching it on DVD or late night channel surfing on local and cable networks. Now, thanks to CBS and the Audience Network, you can now access every episode of “Star Trek: The Original Series,” whenever you want.

CBS announced that it is bringing all three seasons of the original Star Trek to its Audience Network website. All you need to access this streaming goodness of classic Sci-Fi is to have a Web browser with Flash installed. Of course, just like regular TV, you will have to deal with the occasional 15 or 30 second commercial, but this is a small price to pay for on-demand Classic “Trek.”

If “Star Trek” isn’t your thing, however (and we’d be shocked at Geek.com if it wasn’t), then CBS is also bringing other classic television to its Audience Network as well. You can catch the first two seasons of “The Twilight Zone” and the first full seasons of “MacGyver,” “Melrose Place,” and that Polynesian police classic “Hawaii Five-0.”